Machine for feeding- sheets of paper to printing-presses



UNITED sTATEs PATENT oEEroE.

A. H. ROWAND, OF ALLEGHENY, PENNSYLVANIA.

MACHINE FOR FEEDING SHEETS OFPAPER TO' PRINTING-PRESSES.

Specification of .Letters Patent No. 13,183, dated July 3, 1855.

tion, in which- Figure l, is a longitudinal vertical section of myimprovement, the plane of section being through the center. Fig. 2, is aplan or top view of ditto. Fig. 3, is a detached side view of the clampwhich grasps the detached sheet of paper and moves it forward from thepile of sheets.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to a new and im-' proved machine for feedingsheets of paper to printing presses, and consists in the employment of aswinging frame provided with rollers, and a vibrating arm and clamparranged and operating as will be presently shown and described.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A, represents a rectangular box of suitable dimensions in which a bed B,is fit-ted, said bed having vertical rods (c) attached to its undersurface, on which rods spiral springs (b) are fitted. The spiral springsare attached at their upper ends to buttons (c) on the rods (a) andthese buttons are held or sustained at proper points by slides C, seeFig. l. To the under side of the bed B, there is also attached a rod A',which passes through the bottom of the box and has a lever D, attachedto its lower end, said lever having its fulcrum at (ci) see Fig. l. Therods (a) and springs (b) also pass through the bottom of the box, theslides C, Aresting on the bottom of the box.

To the front side of the box A, there are attached two uprights (e) (e)one at each corner or side of the box, and the upper ends of theseuprights are connected by a cross piece (f) which has a pendent (g)attached to its center. To each upright (e) there is attached ahorizontal bar (h) the bars being attached to the inner sides of theuprights. To the ends of these arms there is attached a swinging frameE, having a shaft F, at

.r f l its lower end, which shaft extends entirely across the bed B. Onthe shaft F, there are placed two rollers G, Gr, and at one end there isa pulley around which a belt (j) passes, said belt also passing around apulley on a shaft 'I-I, at-the upper part of the frame E. There is also4a pulley on the shaft I-I, adjoining the pulley (7c) and around thispulley (Z) a belt (m) passes, said belt also passing around a pulley (n)on a shaft I, which has a cone J, upon it. Directly underneath the shaftI, there is a shaft K, which is the driving shaft. The shaft K, has alsoa cone L, upon it, and by means of the cones J, L, the proper speed isgiven the machine, a belt or band of course passes around the cones.

To one end of the shaft I, there is a crank M, to which an arm N, isconnected. And there is also placed on the crank an eccentric O, towhich a bar P, is connected. The arm N, has a projection or prominenceQ, on its upper edge and a small bar R, is fitted on the arm near itsouter end and secured thereto by a set screw (o). Transversely in thebar R, there is placed a small pin or shaft (p) which has a lip (g)attached.

to it, said lip extending below the under surface of the bar R, and atone end of the pin or shaft (p) there is attached a small segment (1)see Fig. 3. This segment (r) is fitted in a slot the ends of which arecurved. The slot (s) is made in a bar S, which is connected to the barP, the bar S, slides in a groove at the side of the bar R. To the backpart of the box A, there are attached two guides T, T, which arerendered adjustable by setscrews The outer end of the arm N, works in aguide U, attached tothe back part of the boxA.

V, V, are spiral springs which are attached to the swinging frame E, andto the uprights (e) (e).

The sheets of paper represented by W, to be fed to the press are placedin a pile upon the bed B, and the springs (ZJ) force or press the paperup against the rollers Gr, G, on the shaft F, of the swinging frame E.Motion is then given the driving shaft K, in any proper manner. Therollers Gr, G, first move the uppermost `sheet of paper backward againstthe guides T, T, as shown in Fig. 2, and by a red line in Fig. l, andthe projection or prominence Q, on the arm N, then strikes against theshaft F, on the swinging frame E, and raises it, and conse quently therollers Gr, G, are freed from the uppermost sheet of paper, and arm P,is also moved back and the lip (g) is depressed or forced downward inconsequence of the bar S, being operated by the eccentric O, the'slot(s) moving the segment (r) at the proper time. The arm N, and bar P, isnow moved forward and the lip (g) catches the back edge of the uppermostsheet which was previously moved backward, and the lip closes and graspsthe edge of the sheetI which is shoved forward as shown in blue Fig. 1,and caught by nipper or other devices by which it is passed to the formon the printing press. The swinging frame is brought back to itsoriginal position by

